brambling

Just installed NGK BKR5EIX-11 with my Dad (he had the tools), and he checked the gap before we installed them. Only 1 was in spec, the rest were shorter than 0.044"

MadMike550

maybe I should have said
never install spark plugs without checking your gap first

thats what I meant when I said gap it yourself..check it make sure the gap is correct
pre gapped or not

ICE4ROG

Ye me! NGK V Power!

Sciond

that is why we check them......

bB2NER

If ya don't go Irridiums you might as well stick with stock replacements.

ICE4ROG

Nothing wrong with stock replacements. I've never tried the Irridiums, nor have I tried the 44 gap. Now let me throw a wrench in your spokes, check out these NGK V Power plugs I'll be getting from BrightGreen.
http://www.brightgreen.us/products/jet_plugs/index.htm

I already use the NGK's obviously, I'll gap these "Jet Plugs" at whatever is spec, it will take some time to come up with any mileage numbers, but win or lose i'll post my results (for those that are interested).

jdmtoybb

that website looked hella fake...

ICE4ROG

The old fake website trick, LOL

I will admit that the gentlemen who run that sight are in no way tech savvy, and if that's all you brought away from checking their website you prolly very happy with your current spark plugs...cool.

Jan06xB

Well I finally installed the iridium plugs today and I must say it it took a while to get the last one indexed properly but I lucked out with a brass washer that only took some snipping and filing to get the 4th plug right. The other three were close enough by swapping them around to get them really close - within 1/6 of a turn to perfect - towards the exhaust valves. The original plugs were all over the place on index and the #1 plug was not very tight at all. Car started right up and seems to start quicker for the three times I started it afterwards. Mileage coming back from Tiverton into headwinds was a bit higher than usual . . . 53mpg . . . I usually only get that when I really try and coast a lot more than I did on this trip. The highway trip to Fall River with a tail wind got me 47mpg which was exceptional also. Power up a rather steep long hill at 35mph in 4th gear was seemingly less of a strain than usual . . . I usually have to drop it to 3rd to make it up.

Man those plugs are way deep in the head !!!

BlueJDMBoxV2

what, no way im runing the top of the line Bosch plugs, and i can vouch for them. big performance gain.

ToyoXrsPl

Ok, 4 pages of info yet I feel like u guys are talking in diff language I'm at 36k mileson stock spark plugs, so should I change them ? But I like to change things myself, dealers here charge an arm and a leg for small stuff, like $30 to change air filter Anyway, so lets say I wanna go with those so called NGK iridiums. but then u guys keep talking about "gapping" and some "0.44" and not doing "gapping" yourself if u don't know how. Someone care to elaborate what is all that fancy stuff and how do I learn it so I can do it myself. Also could I get part# for the NGK iridiums ?

MadMike550

36K?

yes change them
do it yourself...

1box2nv

please explain to me how you calculate your gas mileage.

Sunny

ok, so is this: http://cgi.ebay.com/ebaymotors/New-4...Q5fAccessories
what i need to get?

Wattage

Well check his gas savers link and you'll have an idea.

Jan06xB

Scangauge II - adjusted for proper distance with a gps and fuel usage calibrated against the fillup amount at the pump when I fill it.

As far as the plugs go get the NGK BKR5EIX-11 from Amazon or whereever you can get them for a better price. You should also get a small amount of antiseize to put on the threads when you install them so you do not damage the heads.

1box2nv

ok so with an 06 xb having a 11.9 gallon tank and you claiming that you got 53mpg that means that you could squeeze 630 miles out of a tank? im thinking that even if you drove 20 mph downhill with a hurricane force tailwind that you would not get this mpg. sorry to bust anybodys bubble but even though xbs get great gas mileage its not like its a hybrid or something. next time just use your odometer and compare that against the amount the pump said you put in your car....i think you are multiplying a number in there somewhere with your fancy gps calculations.

Jan06xB

Actually I have gone over 500 mile on about 11.2 gallons along with a couple of other guys one in Texas and one in Alaska. If I drive around 25 to 30 mph I get in the 50mpg range easily but only if I don't have to keep stopping for red lights etc. every mile or so.

bB384

Go get some Denso Iridium's for Prius Denso P/N SK16R11 OR Toyota P/N 90080-91184

danielmiller01

At 41k miles, mine were quite worn down. I installed NGK bkr5eix (I believe that was the right number) iridium plugs. After doing that, a seafoam treatment, then oil change, it is running like new again. Had minor valve noises before, now it's all quiet and smooth.